Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2a01226f6d5340…

MALICIOUS

PDF

62.3 KB Created: 2020-12-14 01:35:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b5e82ddf8e7c4c8689f87fd4c81c593 SHA-1: d42676dd2af32f92d46573f6de0fc4c2ac58751f SHA-256: 7f2a01226f6d5340b5d3e031a0756be8bdaf86cc96ba2d99e8435e2fd7558096
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, specifically for containing a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://cctraff.ru/aws?utm_term=mypillow.+com+giza+dream+sheets. The presence of numerous external PDF links suggests an attempt to manipulate search engine rankings or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/aws?utm_term=mypillow.+com+giza+dream+sheets
    • https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/6067497.pdf
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/62cf7ce118.pdf
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/bikorot_robuwuxit_xawakixur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0f3af1c8c741314320bf8/t/5fc940e76cebf66b99a19ea4/1607024871204/fiwelutegun.pdf
    • https://static1.squarespace.com/static/5fc14640df132613bbc04837/t/5fc2e919e18c5c478e5bf5b6/1606609179357/7786055908.pdf
    • https://uploads.strikinglycdn.com/files/a7224efc-1710-4655-b627-845a45d36411/39351272095.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdff51645712565400796a/1606287185518/kenra_platinum_blow_dry_spray_ingredients.pdf
    • https://uploads.strikinglycdn.com/files/bfc4fb8b-80f8-4a1e-9b35-075f5daea3c0/83705683719.pdf
    • https://s3.amazonaws.com/tobito/36211273446.pdf
    • https://s3.amazonaws.com/nilititonawafim/ejemplos_de_cacofonia_forma_correcta_e_incorrecta.pdf
    • https://uploads.strikinglycdn.com/files/f424d5b8-b0cc-4d6d-92aa-6b0710fb27d2/truncate_vs_delete_oracle.pdf
    • https://s3.amazonaws.com/zuwosil/sceptre_tv_32_inch_with_dvd_manual.pdf
    • https://uploads.strikinglycdn.com/files/f18fc504-2a52-4b8e-8b53-43969bab08b7/polar_fleece_sheets_queen_size.pdf
    • https://s3.amazonaws.com/watajive/8140519588.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b500.bin
99f34371e75ce645e83f7a9922ec1f5d5ecb3f6a574c88e4a231906d556638ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB500 5768 bytes
font_01_sfnt_off0000c8a7.bin
27a59b731f361e9c06e529f78e4c4287839cf6e95a33578c5003e1ccc3aacb13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A7 10276 bytes

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